In 1940, Look magazine did a feature on Jerry Siegel, Joe Schuster, and their new comic book creation “Superman,” whom Look calls “An imaginary man popped out of an imaginary planet.” But I mainly love the subhed there: The part that begins “New Comic Strip Hero Proves...” and ends with the title of the post:

As Jolson said, “Wait a minute! Wait a minute! You ain't heard nothing yet.”